Chemistry, asked by anonymousme75, 10 months ago

Why students can
read black board written by chalks?

Answers

Answered by principalajdc

3

Answer:

because boards are black and chalk are white which helps us to see written words on blackboard clearly and mire effectively .

Answered by satyam78137

2

Answer:

Because the board works on adsorption

Chalk is adsorbed on the surface

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